Pipe plug



FIG. 1 is an upper front perspective view of a pipe plug showing my new design including the front and top thereof.

FIG. 2 is a lower back perspective view of the pipe plug showing the bottom and back thereof.

FIG. 3 is an upper front perspective view of a second embodiment of the pipe plug showing the front and top thereof; and,

FIG. 4 is a lower back perspective view of a second embodiment of the pipe plug showing the bottom and back thereof. 

The ornamental design for a pipe plug, as shown and described. 